1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8a18a88b1108a7fd052693a4893a70955ef2fa4df4ce91cdd253676f30770. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2af0579-e812-40ce-a9eb-1aaff6868382.json and https://artists.proofprofile.net/proofs/artist/c2af0579-e812-40ce-a9eb-1aaff6868382.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb305e61b08be5fe5f5a205cf03caeef14c58dd8a48ecaab61e9bbc16b8d1bde5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7322778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592aa3534450debf6304dc03b8de56589f470343222156a499525a7f11a55b42. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7322782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c77667bbd5ae026a8d2191e17ff0f4ee5a377ddff6e0cf16b8412dbcdd90c65. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f69b0ee74329065836f5737f40182d63f16ecfd0a5c84d16aaed4be5f4a586. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16534e46a3174821cb658202982bb54e00f33ef9541b6607cbd7ce3d1bc7c30f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435820ec82a285da667d7554608067636a5a9eb0663fd8adeaa191cdcbcdeef0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970bff9c06026cf21c04a8e6ffc5b73b0bd213ed8fc8b0597a61b770e6146f00. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c186485cabbb8acf26eeec18178fa11ba18d9ab41bfb9e8501ccc376a3bdda3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU0086097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149b95947e9662f46a94ff37a8dc0ca5321e4e2089bcd3352b1335c9962fa48f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b46ec885ad46dd75737238291c3fadfceb16a8493de34be2b38965a1c67e0a7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c18af4ece0cb1e8c6b1a8c7e1fef6e4086b90c13eb3d65b3daec53f6303730. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:42:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef789aa8970d0d81364ff22576042d77cfca222ddf12f9dc9543b705eed9c310. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3cddbbf031c96e8bec5cc99ebffd2034452222a08463aeb464b22b3870942b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65798dd66d0e0bd6091b7a6843c3e14cf1d0fe87d38c3323e749d4f34273022. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3954b5fce9638f80ad00818db62d5f81a1ca3aa9f8083cc42bddc59ec69050. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEWGI2344352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821ec533821753f097d528d51e772e1225b1875e28dcb66e6ed2e150f172d5ef. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB8YA2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df0877373df033bbba19788555cfd232ad8100b59e034bcaaa49d57ffa39bef. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:45:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX89G2540865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dfe26e11c361f2ea37e38ab4740df63e3ae1fea724735ede469e6c4b85ceac. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXFHP2448518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e904b6fb8c65144ba4a5affa8cef77209da3d4957e4de91130968f9d367201. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXFHP2411637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633b6ea2ef86162a0ce41dfc49791421fdeba6a6e915a78c63d6f6c46798b27. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXFHP2423173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c7c592cbcc3af8112ec87d0fe16ea04acc280711ca834862da5f1500e4c9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAWTL2100002.